Not opening current task for closed Recents

If Launcher is closed manually while Alt-Tabbing, and then Tab gets
released, we now don't activate the current task in Overview.

Bug: 73090995
Test: After Alt-Tab, while holding Tab, close the Launcher by touch.
Then release Tab.

Change-Id: Ic3c2d02b6b7721e0d8948b84e73dee85eedad800